Alarm



- Jan. 4, 1938. G. KRATZ 1 4,

ALARM Filed April 1, 1937 2 Sheets-Sheet 2 Inventor Patented Jan. 4, 1938,

UNITED STATES PATENT OFFICE ALARM George Kratz, Jamaica, N. Y.

Application April 1, 1937, Serial No. 134,390

Claims.

it unnecessary that the person starting the same make any suspicious move that might draw the suspicion of the wrong doer.

Another important object of the invention is to provide an apparatus of the character stated which will be substantially automatic in operation and not susceptible to the ready development of defects.

Other important objects and advantages of the invention will become apparent to the reader of the following specification.

In the drawings:- v

Figure 1 represents a vertical sectional view through the housing of the apparatus.

Figure 2 represents a top plan view of the apparatus with the top removed.

Figure 3 is a diagrammatic view disclosing the electrical connection between the electrical devices involved.

Referring to the drawings wherein like numerals designate like parts, it can be seen that the apparatus consists of the housing 5 mounted on the base 6. This housing has a hinged closure 1 at its front side. The top 8 of the housing is situated a slight distance downwardly from the upper edges of the side, back and front walls and to the upper edge of the back wall is hingedly secured the cover 9.

To the top 8 is secured the motor Ill for driving the turntable ll upon which a record 12 is placed.

Numeral I3 represents the pick-up arm suitably mounted to the sound arm M which, in turn, is swivelly connected to the upper end of the horn l5. Numeral l6 represents a telephone transmitter having the usual receiver hook II. This telephone instrument is set upon the base 6 in the cabinet and is preferably secured in place against shifting,

A post IB is secured to the top of the housing top 8 and is provided with a laterally disposed arm [9 at its upper end. This arm and the post 18 are of current con-ducting material, the arm l9 having a cut out portion in which an insert of insulation 20 is placed. Furthermore, the arm I9 is of arcuate shape, the same being on an'arc having the same center as the swingable sound arm l4, and against this arm I9 rides the spring brush 2| carried by the arcuate conduit 22 projecting laterally from the sound arm l4.

Projecting laterally from the turntable I l is the hook 23 which engages the upstanding lug 24 on the b-ellcrank 25. The bellcrank 25 carrying the contact 26 which is engageable with the contact 21. At the opposite end of the bellcrank 25 from the lug 24, attaches the cable 28 which is trained over the pulley 29 and downwardly throughthe opening 39 in the top 8. On the base 6 is the pulley 3t under which the cable 28 is disposed and this cable also extends under the second pulley 32 on the base 6 and then upwardly to connect to the receiver hook I1.

As can be seen in Figure 3, a plurality 'of switches 33 are connected in series with the conductor 34 from the post I8 and the conductor 35 to the motor II]. A jumper around the switches 33 has the contact 2'! and bellcrank 25 I installed therein; The conductor 22 from the brush 2! extends to the opposite side of the motor I.

It can now be seen, that normally the apparatus is set in the position shown in Figure 2. A momentary closing of any one of the switches 33 will close the circuit A (see Figure 3) energizing the motor Ill. A slight movement of the turntable II is sufiicient to release the bellcrank 25, thus permitting the receiver hook I! to rise and establishing the telephone line for commu-- nication thereon. Immediately sound from the rotating record will be delivered by the horn IE to the transmitter l6 and the alarm message of the record 12 will be transmitted.

7 When the record has been completely played, the brush 2| will have reached to the insulation insert 20 and this will break the electric circuit, thus deenergizing the motor I0.

It will also be observed, that the closing of the switches 33 need only be momentary because as soon as the bellcrank 25 is released the circuit I0 is established around the switches 33 by Way of the jumper B.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, sim and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention what is claimed as new is:

1. In combination, a phonograph including a turntable, a motor for driving the turntable, an electric circuit including the motor and a manual switch for initially controlling operation thereof, a shunt circuit around the said switch, a turntable operated switch in the said shunt circuit for closing the shunt circuit upon operation of the turntable for subsequently controlling operation of the motor, a telephone instrument including a transmitter and receiver hook, said transmitter being in sound receiving relation with the phonograph, and means between the 'turntable and the receiver hook for releasing the receiver hook upon operation of the turntable.

2. In combination, a phonograph including a turntable, a motor for driving the turntable, an electric circuit including the motor and a manual switch for initially controlling operation thereof,

a shunt circuit around the said switch, a turntable operated switch in the said shunt circuit for closing the shunt circuit upon operation of the turntable for subsequently controlling operation of the motor, a telephone instrument including a transmitter and receiver hook, said transmitter being in sound receiving relation with the phonograph, and means between the turntable and the receiver hook for releasing the receiver hook upon operation of the turntable, said last mentioned means including the switch of the shunt circuit.

turntable, a motor for driving the turntable, an electric circuit including the motor and a manual switch for initially controlling operation thereof, a shunt circuit around the said switch, a turntable operated switch in the said shunt circuit for closing the shunt circuit upon operation of the turntable for subsequently controlling operation of the motor, a telephone instrument including a transmitter and receiver hook, said transmitter being in sound receiving relation with the phonograph, and means between the turntable and the receiver hook for releasing the receiver hook upon operation of the turntable, said last mentioned means consisting of a projection on the turntable, a rockable member adapted to be engaged by the turntable and held 3. In combination, a phonograph including a in said position, a connection between the rocker and the receiver hook for holding the receiver hook in circuit closed position when the rocker is engaged by the turntable projection.

4. In combination, a phonograph including a turntable, a motor for driving the turntable, an electric circuit including the motor and a manual switch for initially controlling operation thereof, a shunt circuit around the said switch, a turntable operated switch in the said shunt circuit for closing the shunt circuit upon operation of the turntable for subsequently controlling operation of the motor, a telephone instrument including a transmitter and receiver hook, said transmitter being in sound receiving relation with the phonograph, and means between the turntable and the receiver hook for releasing the receiver hook upon operation of the turntable, said last mentioned means consisting of a projection on" the turntable, a rockable member adapted to be engaged by the turntable and held in said position, a connection between the rocker and the receiver hook for holding the receiver hook in circuit closed position when the rocker is engaged by the turntable projection, said switch of the shunt circuit including a contact on the rocker and a second contact in the path of the contact on the rocker.

5. In combination, a phonograph including a turntable, a motor for driving the turntable, an electric circuit including the motor and a manual switch for initially controlling operation thereof, a shunt circuit around the said switch, a turntable operated switch in the said shunt circuit for closing the shunt circuit upon operation of the turntable for subsequently controlling operation of the motor, a telephone instrument including a transmitter and receiver hook, said transmitter being in sound receiver relation with the phonograph, and means between the turntable and the receiver hook for releasing the receiver hook upon operation of the turntable, and means for breaking the said motor circuit when the record has been played.

GEORGE KRATZ. 

